Sung-eon Park

Sung-eon Park

パク・スンオン · Forward Deployed Engineer, Tokyo

I work in Tokyo as a Forward Deployed Engineer, which mostly means sitting between what a customer says they need and what a system can actually be made to do, and being honest with both sides about the distance between the two.

Before that I was a technical program and product manager, and before that a developer. The through-line is that I like the problems where the hard part is not the code but working out what should be built at all. This site is where I write that down, and where I put the photographs I take when I am not doing it.

Forward Deployed Engineer

2026.02 — now

Salesforce · Customer Success Group · Tokyo, Japan (Hybrid)

  • Joining Salesforce as a Forward Deployed Engineer in the Customer Success Group starting February 2026.

Technical Program Manager & Product Manager

2025.04 — 2025.11

SoftBank Corp. (ソフトバンク株式会社) · SB OpenAI Preparation Office (SB OpenAI準備室) · Tokyo, Japan (Hybrid)

  • Led planning and PoC delivery of enterprise AI agent products and related backend systems for Japanese enterprise customers.
  • Owning end-to-end PoC cycles from problem framing, requirements definition, architecture design support, and technical validation through Go/No-Go recommendations.
  • Evaluated new LLM, agentic workflow, RAG, and vector database technologies hands-on and translated findings into concrete adoption strategies for internal and external stakeholders.
  • Structured complex technical and business constraints into concise one-page materials to support quick decision-making by executives and partner companies.
  • Defined hiring profiles, evaluation criteria, and interview processes for Forward Deployed Engineers and other technical roles, and participated in interviews as a technical assessor.
  • Supported technical success initiatives for early customers, including usage design, guardrail planning, and quality monitoring of AI workflows after rollout.

Business Strategist

2024.04 — 2025.03

SoftBank Corp. (ソフトバンク株式会社) · Beyond Japan Strategy Office (Beyond Japan推進室) · Tokyo, Japan (Hybrid)

  • Designed non-organic growth strategies, including minority investments, M&A, and strategic partnerships with overseas technology companies.
  • Worked with executives, finance teams, and external partners such as IBs, VCs, and target company management to build investment theses and business synergy hypotheses.
  • Planned go-to-market strategies for overseas portfolio companies entering Japan and APAC, including target segments, ICP, value propositions, and partnering models.
  • Conducted cross-industry research on market, technology, macroeconomic, and geopolitical trends and regularly briefed executives with concise, actionable insights.

Product Manager

2023.10 — 2024.03

LY Corporation (LINEヤフー株式会社) · LINE News (メディアカンパニー LINEメディア統括本部 企画デザイン本部 サービス企画4部) · Tokyo, Japan (Hybrid)

  • Continued as Product Manager for LINE News after the merger of LINE Corporation and Yahoo Japan Corporation.
  • Maintained and improved service KPIs during organizational changes by keeping product roadmaps, experiments, and backend projects on track across multiple teams.
  • Coordinated cross-functional stakeholders in editorial, business, and engineering to ensure a smooth transition of ongoing initiatives.

Product Manager

2022.04 — 2023.09

LINE Corporation (LINE株式会社) · LINE News (ポータル&サーチカンパニー サービス企画4室) · Tokyo, Japan (Hybrid)

  • Product planning and project execution for LINE News across UX design, user research, backend development, machine learning features, and data analysis.
  • Directed development of internal API services by clarifying interface and quality requirements and collaborating with engineers to continuously improve reliability and performance.
  • Designed and evaluated large-scale A/B tests using TB-scale behavioral data to identify UX improvement opportunities and measure impact on key product metrics.
  • Collaborated with editorial, business, and engineering teams on initiatives such as local information features and cross-company campaigns.
  • Leveraged internal data warehouses and data lakes for exploratory analysis to generate hypotheses and iterate quickly on product ideas.

Business Strategy

Business Development · GTM Strategy · Market Research · Strategic Partnerships · M&A · Investment Analysis · Value Proposition Design

Management

Technical Program Management (TPM) · Product Management · Agile Methodologies · Technical Hiring & Assessment

Technical Strategy

AI & Machine Learning Strategy · Agentic AI Workflow Design · RAG Architecture · Cloud Architecture · System Design · Technical Roadmapping

Product Design & Development

Requirements Definition · A/B Testing & Experimentation · User Experience Design · Market Analysis · UI Prototyping (Figma, etc.)

Database

Vector Databases (Pinecone, etc.) · Azure Cosmos DB (NoSQL API) · MongoDB · Amazon DynamoDB · Elasticsearch · OpenSearch · Redis · PostgreSQL · HBase · Cassandra · Hive

Data Analysis & Engineering

Apache Spark (PySpark/Scala) · Polars (Python/Rust) · pandas · Presto (Trino) · Power BI · Tableau

Programming

JavaScript & TypeScript · Python · C# · Scala · Java · Kotlin · Go · Rust · Swift

Cloud & Infrastructure

Azure · AWS · Docker · Kubernetes · CI/CD Pipelines · Infrastructure as Code

Frontend Development

Next.js · Svelte / SvelteKit · React · Flutter · Swift (iOS/macOS) · .NET MAUI · Blazor Hybrid · Tauri · Electron

Backend Development

ASP.NET Core · FastAPI · Gin (Go) · Akka (Scala) · Express.js

GenAI & AI Integration

OpenAI / Gemini SDKs · Semantic Kernel · MCP Server Development · Agentforce · Dify

  • Salesforce Certified Platform Administrator II Salesforce · 2026.04
  • Salesforce Certified Platform Developer II Salesforce · 2026.04
  • Salesforce Certified Platform Data Architect Salesforce · 2026.03
  • Salesforce Certified Platform Developer I Salesforce · 2026.02
  • Salesforce Certified Data Cloud Consultant Salesforce · 2026.02
  • Salesforce Certified Platform App Builder Salesforce · 2026.02
  • Salesforce Certified Platform Administrator Salesforce · 2026.02
  • Salesforce Certified Agentforce Specialist Salesforce · 2025.12
  • JLPT (日本語能力試験) - N1 国際交流基金 & 日本国際教育支援協会 · 2016.08

Sung-eon Space

Essays, photographs and small tools by Park Sung-eon. Written in Tokyo.

© 2026 Park Sung-eon. All rights reserved.